Alien is based on the classic thriller film of the same name, although you'd be hard pressed to recognize it if not for the cart label with its artwork depicting the movie. Fox Video Games basically took the movie and translated it into game action through a maze format that's very reminiscent of Pac-Man. The maze is supposed to represent the inside of a spaceship that has been infested with alien beings. Adult aliens are loose in the ship, laying eggs in all the hallways and chsing the human crew. It is the task of the player to rid the ship of the eggs by running over them and to destroy the adult aliens whenever possible. In addition, there are special prizes that appear from time to time, and picking these up will increase your score significantly.